AMSOIL Motorcycle Octane Boost (MOB) increases octane for power and efficiency. It is designed to improve startup performance and eliminate engine ping and knock for increased power at low-rpm operation.

Product Code: MOB •
Brand: AMSOIL

Product DetailsReviews & Rating

Product Applications
Motorcycle Octane Boost is primarily recommended for use in four-stroke air- or liquid-cooled motorcycles manufactured by Harley-Davidson®, Yamaha®, Honda®, Ducati®, BMW®, Triumph® and all other four-stroke motorcycles. It may be used in off-road applications, including ATVs, UTVs and snowmobiles, as an alternative to AMSOIL DOMINATOR® Octane Boost. Note: Clean spills immediately using a clean towel. If left standing, Motorcycle Octane Boost can stain painted or metal surfaces. If cleaned immediately, there is no need for concern.

Product Description
AMSOIL Motorcycle Octane Boost (MOB) increases octane for power and efficiency. It is designed to improve startup performance and eliminate engine ping and knock for increased power at low-rpm operation. Motorcycle Octane Boost contains detergents that help combustion chambers and fuel delivery systems maintain cleanliness for optimum performance. At the recommended treat rate, it does not harm catalytic converters or oxygen sensors and is compatible with all other AMSOIL fuel additives.

Maximizes Power and Performance
When treated at 1.3 oz. per gallon of fuel, Motorcycle Octane Boost increases the octane of gasoline up to three numbers. Increased octane improves power and can eliminate performance-robbing and potentially damaging engine knock or ping (see below).

Improves Low-rpm Performance
Engine knock is especially noticeable in some motorcycles during idle or low-rpm operation and high-temperature driving. Most modern bikes are equipped with sophisticated knock-detection systems that can alter spark timing and the air-to-fuel mixture until knock ceases. Although these systems protect the engine from damage, they can also cause reduced horsepower and poor low-rpm operability. AMSOIL Motorcycle Octane Boost helps reduce the need for knock-detection systems to compensate, ensuring maximum low-rpm power and performance in modern bikes.

What is Engine Knock and Why does it Matter?
The tendency of a hydrocarbon fuel, such as gasoline, to knock is measured by its octane number. Lower numbers denote a greater knock tendency; higher numbers denote greater knock control. "Engine knock" is a reference to the sound made from an uncontrolled and early ignition of fuel in the combustion chamber. It causes a knocking or pinging sound, robs the engine of power and can cause catastrophic engine damage. Knock may be eliminated by increasing the fuel's octane.

What is Research Octane Number?
Research Octane Number (RON), Motor Octane Number (MON) and Anti-Knock Index (AKI) are the three most common octane ratings. AKI, the rating with which most North American motorists are familiar, is typically displayed on gas pumps as the average of the fuel's RON and MON [(R+M)/2]. RON, however, is the most common industry rating. Therefore, AMSOIL uses the RON rating when conducting performance tests and product validation. Gasoline's RON generally is a few numbers higher than the AKI posted on the gas pump (e.g. 87 octane fuel, or regular pump gas, has a RON of about 91-92).

When marketing their products, some additive manufacturers have adopted a points system where 10 points equals one octane number. A claim that an additive increases octane 30 points translates into an increase of three octane numbers. This approach is often used only to artificially strengthen marketing claims and is not endorsed by AMSOIL.

Treat Rate
One 4-oz. bottle of AMSOIL Motorcycle Octane Boost treats four to six gallons of gasoline. Slight overtreatment causes no issues.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Did this product meet your expectations?

Octane boost

Good to have on a trip when you can not find 93 octane gasWorks good no kinks or pings when used

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

February 5th, 2018 at 11:43 pm

Reviewed by JWJIII:

Love it!

Run this octane boost in My 2012 Harley Tri-glide for last 2 years, love it!!! My Tri-Glide loves it, too!!!

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 24th, 2018 at 11:24 am

Reviewed by webersrock:

Love the convenience

The octane boost helps my new Ultra run great! The individual size bottles are easy to carry in the saddle bags, just pour it in when I fill up.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 18th, 2018 at 12:50 pm

Reviewed by Fred Hartell:

Love this stuff!

I love this stuff! I've used it for all my HD motorcycles and it is AWESOME!

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 12th, 2018 at 8:52 am

Reviewed by Ron:

I would buy this product again.

I put this in my fuel tank after fill-up. The bike almost immediately had greater acceleration and snappy response. It is even more fun to ride now with the octane boost in the tank.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

December 17th, 2017 at 3:22 pm

Reviewed by Tony:

I would buy this product again

I ran this in my bike for the last ride of the season,full tank and alot of riding. The bike seemed to have a little more kick to it on the throttle and the bike ran smooth.I will be using this in my bike for now on. Great product

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

December 9th, 2017 at 7:57 pm

Reviewed by pops:

Very good

Good product, could tell the difference

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

October 26th, 2017 at 12:50 am

Reviewed by Kojack:

Yes

I use it in my Harley and I can see the difference I get great performance

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

October 24th, 2017 at 11:42 pm

Reviewed by Viper6:

Makes a difference

Tried in in my motorcycle and likes the results.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

October 24th, 2017 at 11:40 am

Reviewed by Bikerdoc:

I Recommend this product

On a recent motorcycle trip I noticed my Harley started quicker than normal and better mileage

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

October 5th, 2017 at 2:39 pm

Reviewed by Jeff:

Great solution

I only use 100% gas in my Harley but I can only buy the 87 octane in my area. I use this octane booster and my bike runs much smoother. plus having it in the small bottles to take with me is a bonus.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

October 4th, 2017 at 1:10 pm

Reviewed by Dave:

Very good booster

Gives the gas a great boost, no pinging with this product

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

September 18th, 2017 at 9:06 am

Reviewed by Dieselboy:

Smooth running

This additive makes my Victory cross country run smoothly and strong.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

July 30th, 2017 at 1:40 am

Reviewed by Jeff:

I used Octane booster in my Harley's

I add Octane Booster every other tank full to my Harley's to give it that extra Octane to burn more cleaner....

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

July 10th, 2017 at 11:45 am

Reviewed by Charlie P:

Boost it

Definitely gave my 2016 FLSTN a decent octane boost. Can feel the difference in the ride.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

July 4th, 2017 at 4:50 pm

Reviewed by Nighthawk:

Works great

I ran this in my 2011 street glide with high compression..

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

May 26th, 2017 at 2:09 am

Reviewed by Mack:

I will buy this again for sure

Weather needs to warm up to put it to use in the motorcyclesame

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

March 19th, 2017 at 10:57 am

Reviewed by Big D in Abilene:

Awesome product

I travel on long road trips on my bike and I prefer 93 octane, when I'm in the southwest part of the United States in the rural areas it can be hard to find 93 octane, I carry several bottles of octane booster to use during fill ups to keep my Harley running at it's top performance .

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 31st, 2017 at 2:04 pm

Reviewed by Joe:

Ran Smoother

Gave this a try to see if it would help with starting issues I was having, Can't say it helped with the starting issues but the engine ran noticeably smoother at highway speeds.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 19th, 2017 at 12:29 am

Reviewed by David:

Good Product

I often use Amsoil Octane Boost while driving though certain Sates that have heavier Alcohol content in their gasoline. It greatly reduces pinging and adds power responses. I also will use the Octane Boost in the mountains for the basically the same reasons.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

January 16th, 2017 at 1:40 pm

Reviewed by Tj:

Will buy again.

Great for boosting your octane a few points in your bike.

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

December 23rd, 2016 at 10:40 am

Reviewed by n/a:

motorcycle octane boost

excellent product

Item Reviewed: AMSOIL Motorcycle Octane Boost (MOB)

August 29th, 2016 at 2:15 pm

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